Adjustable bed clamps for therapeutic devices



J. NAWARA March 29, 1960 ADJUSTABLE BED CLAMPS FOR THERAPEUTIC DEVICES 2Sheets-Sheet 1 Filed June 11, 1959 INVENTOR.

2 Sheets-Sheet 2 J. NAWARA JNVENTOR. a ef/Vawarcz, 66

March 29, 1960 ADJUSTABLE BED CLAMPS FOR THERAPEUTIC DEVICES Filed June11, 1959 limited States ADJUSTABLE BED CLAMPS FOR DEVICES THERAPEUTICThe present invention relates to clamps capable of engagement with thehorizontal top rails of head and foot frames of a bed for supportingthereon four legs, in a vertically adjustable relation, which legs inturn, by their upper ends are capable of supporting a superstructureframe disposed above the bed on a horizontal plane, which frame in turnis capable of supporting various therapeutic exercising devices for useof a patient while in a reclining position upon the bed. The framesupporting legs, to the use with which the present clamp relates, aredisclosed in my co-pending application, Serial No. 714,565, now Patent2,921,790.

The principal object of the present invention is the top bars, one atthe head of foot of the bed, are not upon Therefore, another object ofprovision of a clamp of the which may be capable of verwhen four of theclamps are the two horizontal top bars of the head and foot frames of abed, they may be capable of vertical adjustment for the purpose ofvertical adjustment of the four legs supported by the four clamps inorder that the superstructure frame aforesaid maybe supported above thebed upon a horizontal plane.

A still further object of the present invention is'the provision in aclamp of the type hereinabove indicated of a stationary frame defining asupport for the lower end of a superstructure frame supporting leg, withadjustable means, depending in a downward direction from said stationaryframe for engaging a horizontal top bar of a head or foot frame of abed, as the case may be, which means may be adjustable in a verticaldirection with relation to the said stationary frame, wherebytheisuperstructure frame supporting leg may be supported upon the saidhorizontal top bar in a vvertically adjusted relation therewith. 1

A still further object of the present invention is the provision, inconjunction with the clamp stationary frame aforesaid, of a pair ofclamping members, downwardly depending from the said stationary frame,and which clamping members may be capable of vertical as Well ashorizontal adjustment with frame. p

With the above general objects in view and others that will appear asthe invention is better understood, the same consists in the novelconstruction, combination and arrangement of parts hereinafter morefully described, illustrated in the accompanying drawings and pointedout in the appended claims.

In the drawings forming a part of this application, and in which likedesignating characters refer to corresponding parts throughout theseveral views: 7

.Fig. 1 is the end elevational view of a bed, including a a bed and theother at the the same horizontal plane. the present invention is thetype hereinabove indicated tical adjustment, so that used for engagementwith relation to the said stationary atent ICC pair of legs and ahorizontal top bar of either the head or foot frame of a bed,illustrating an operative position of a pair of leg supporting clamps inengagement with the said horizontal top bar, for supporting the lowerends of a pair of legs, the latter supporting by their upper ends asuperstructure frame disposed above the bed, which superstructure framein turn supports various therapeutic exercising devices;

Fig. 2 is an enlarged end elevational view of the present clamp, theview having been taken upon a plane transverse with relation to thehorizontal top bar of either the head or foot frame of the bed, on line2-2 of Fig. 1;

Fig. 3 is a horizontal cross section through the clamp, taken on line3-3 of Fig. 2;

Fig. 4 is a cross sectional view on a vertical plane through the clamp,taken on line 4-4 of Fig. 2; and

Fig. 5 is a side elevational view upon a vertical plane indicated by 5-5of Fig. 2.

Referring in detail to Fig. 1 of the present drawings, there is shown abed, including a pair of end legs 10, the lower ends of which areprovided with casters 11. The four bed legs 10 support bedstead 12 inthe usual manner. A pair of end legs 11 supports a head or foot frame ofa bed, which includes a horizontal top bar 13. Disengageably aflixableto the said horizontal top bar 13 IS a pair of clamps, generallyindicated by 14 in Fig.

l for supporting thereon a pair of end legs 15, which, in cooperationwith a pair of similar legs 15 at the opposite end of a bed, support bytheir upper ends a horizontal, substantially rectangular superstructureframe 16.

Said superstructure frame 16 is disposed above bedstead 12, and iscapable of supporting in a downwardly depending relation varioustherapeutic exercising devices, which are generally indicated by 17 inFig. 1, and which are in a greater detail shown and described in my saidco-pending application. The said exercising devices 17 are intended foremployment by a patient while in a reclining or supine position uponbedstead 12.

Considering that. the two horizontal top bars 13, one at each end of thebed, are not upon the same horizontal plane, and also bearing in mindthat itis often desirable to position the said superstructure frame 16nearer to or farther away from bedstead 12, so as to locate saidexercising devices 17 at a most convenient distance from the patient,and this latter consideration irrespective as to whether or not thehorizontal top bars 13 at both ends are upon the same horizontal plane,it therefore becomes both desirable and necessary to have clamp 14adjustable in a vertical direction for the purpose of attaining theobjects last hereinabove specified.

Referring now in detail to the construction and operation of clamp 14,the same includes an inverted U-shaped, leg supporting member, generallyindicated by 18 in Fig. 2. Said leg supporting member 18 includes avertical side plate 19 and a similar vertical side plate 20, said plates19 and 20 are downwardly depending from the ends of connecting, legsupporting plate 21.

the horizontal, Rigidly afiixed to Receivable within the lower open endof said leg supporting member 18 is an inverted, substantially J-shapedmember, generally indicated by 23 in Fig. 2, and which includes ashorter vertical plate 24 and a longer vertical plate 25, both of saidplates being integrally formed with and downwardly depending of theclamp, taken from the ends of the hori zontal. connecting plate 26.vertical side plate 19 with weld 28 rigidly interconnects with the saidvertical plate 25. By virtue. of the rigid;

connection through welds 27 and 28 members. 18' and 24 are in a mutuallyrigid position, connecting. plates 21 andv 26 ina mutually rigid,station.- ary relation.

Cooperating with said vertical side plate 19 is a vertical shiftableplate 29, the former being much wider on. a vertical plane than thelatter. The lower. end of said shiftableplate 29 is bent in a transverserelation with. the ends of said side plate 19 and plate-24 to defineshoulder 38, which, coming in contact with the ends of plates 19 and124acts as a stop for preventing further shifting movement of said.shiftable plate 29 in an upward direction. Downwardly depending fromsaid shou1deri30 is an inte.- grally formed arcuate clamping jaw 31.

Made in said plate. 29 is a pair of vertical slots 32 for. accommodatingtherewithin' shanks of thumb screws 33, a pair of the latter withineachof saidslots 32. The thumb heads of said screws. 33 are positionedadjacent the outer face of said shiftable plate 29, as seen in Figs. 2.and 3. Portion of the shank of each of said screws 33 is positionedwithin a corresponding aperture made in said vertical side plate 19,through which each of saidscrews 33 is passed. The inner threaded endsof said screws 33 are engaged by lock nuts 34. On loosening said. locknuts 34 said shiftable plate 29 is capable of upright shifting in eitherdirection for. adjusting the distance ofthe clamping jaw 31 legsupporting plate 21'.

When proper. adjustment of. said clamping jaw 31 hasbeen made, lock nuts34 are then tightenedfor rigidly engaging said shiftable. plate 29 inits adjusted relation with said vertical side plate 19.

It. is observed that said clamping jaw 31 downwardly.

depends from and merges with a vertical plate portion 35whichimmediately extends from the adjacent. end of. said shoulder stop30.

Coacting with clamping member 31-35, at the opposite side of the clampis a similar arcuate clamp jaw 36 which is integrally formed with andextends in a down? ward direction from averticalclamp plate. 37.Integrally formed with and upwardly extending from the center-of theupper edge of said clamp plate. 37 isv a. screw. rod 38, which is:positionedwithinand extendedthrough slot 39 made in a central.longitudinal relation with the. horizontal connectingplate 26, and in a.tranverse. relation. with the clamp. device. rod 38, for a rotaryadjusting. relation therewith, is nut- 40, adapted to contact. theunderface of said horizontal: connecting plate 26, along itsbody'portion. adjacent said slot 39, as is seen. in Figs. 2. and.4. Thepurpose of. said nut 40 is to adjust said screw rod 38longitudinally'with relation to the said horizontal connecting plate 26;for. thereby vertically shifting the clamp member 36-37 toward or awayfrom the said leg supporting plate 21. When proper longitudinal 38 hasbeen made, with nut 40 brought in contact with theunderface of. saidhorizontal connecting plate 26, lock. nut 41 is then rotatably shiftedupon. saidscrew rod 38: in'a downward. direction until it comes in.contact with.-

the upper face ofthe saidhorizontal connecting plate26. Thus, said nut40v and lock out 41 are adapted to. clamp the said horizontalconnectingplate. 26'therebetween: for.

maintaining said screw rod 38 and. said clamp member.

36-37 in their verticallyadjusted relation with. said leg supportingplate 21.

Prior to' the engagement of the present clamp device with the horizontalframe bar 13, a tubular split gasket 42,. madeof hardrubber or likematerial, is: placed upon the said horizontal frame tion therewith. Toapplythe present with said horizontal-v With relation to the said;

. Mounted upon: said screw.

adjustment of said screwt rod.

bar 13 inan encompassingrel'aclamp to the said gasket 42,. theShiftahle. plate. 29awithitsdepending clamp 'a's esas 1 member 31-35 isremoved. from the vertical side plate 19 on disengagement of lock nutsfrom screws 33, while maintaining the ultimate operative position ofscrew rod 38 and clamp member 36-37, as related to the ultimate requireddistance of the leg supporting plate 21 from the said horizontal framebar 13. The preliminary establishment of the said ultimate operativeposition of the said screw rod. 38 and clamp member 36-37 with. relationto their respective distances: from the said leg supporting plate 21will be aided by first loosening both nuts 40 and 41. When the:required. preliminary positional relationship of said screw rod 38 andclamp member 36-37 with relation to the distance of the latter withrespect to the said legsupporting plate 21. has been established, bothnuts 40 and 41 are thereupon tightened in a clamped relation with thesaid horizontal connecting plate 26. Having done this, the shiftableplate 29 with its clamp member. 31-35,. is applied bypassing screwsscrews; 33, and. thereupon 33: through slots 32 and-the apertures madein the vertical side plate 19 which. accommodate: the shanks of saidlock nuts 34 are tightened in order to clamp said shiftable plate 29' tosaid vertical side plate-19 for maintaining. the former. in itsvertically shifted adjusted relation with-the latter.

.The above operations having been completed, means are provided andresorted to, in order to. shift said clamp member 36-37 upon ahorizontalplane, in a strong cooperative. clamping relation. with theclamping. member 31-35.

a The: means last hereinabove mentioned includes a pair of; thumb:screws passed: in: a threaded relation through saidplate-ZS.v Inthreaded engagement with each of said screws43- isatpair of; lock nuts44,- one on each side of.

contactual pressure of the inner ends'oi. said screws 43 uponssaidclampplate. 37 is brought about by operatively turningjthe-thumb headsi atthe. outer ends of said screws 43.

Prior to resorting to. turning. of said screws 43 lock prior to theturning of face of said horizontal connecting plate 26'. This. beingdone, the upper nut 41 constitutes means. whereby said screw rod 38- andsaid clamp member. 36-37 hang upon the. said: horizontal connectingplate26 for maintaining the undisturbed preliminary positionalrelationship theretofore established for said .clamp'mernber 36-37 withrelation to the said leg supporting plate 21- so as to adjust the'latterin a vertical direction to or away from the said horizontal frame: bar13, as may be required-for proper vertical adjustmentof leg 15-, inconformity with the remaining three legs l-S for the purpose ofsupporting thereby the superstructure frame 16* upon a horizontal planeand. for the purpose. of properly distancing of the said exercisingdevices 17 from the patient upon the bedstead 12, as washeretoforementioned:

Whilem'aintaining the-connection ofsaid screwrod 38 andthe. clamp member36-37,'withthesaid horizontal connectionpl'atei'tfi, through engagementofthe latter by nut141 withllower nut: 40 inaloose-position withrelation to the said horizontal connecting plate"-26, screws 43amdriven. against: the clamp plate-37 by turning the thumb 7 heads of: thesaid screws.

by said screws 43 against said' clamp pIate:37-will= cause- A- strongpressure engendered the aaid clarnpmemben 36-37 'to' shitt against saidgas ket 42 in'the direction of the clamp member 31-35, whereby the twoclamp members will squeeze said gasket 42 and will rigidly interconnectthe clamp device with said horizontal frame bar 13, for rigidlyconnecting the clamp device with the said horizontal frame bar 13, forrigidly supporting the lower end of leg 15 in its longitudinallyadjusted relation and in its adjusted relation with the remaining legs.

While pressure upon said clamp plate 37 by screws 43 is brought about,screw rod 38 is capable of shifting within slot 39, until ultimateclamping action of both clamp jaws upon gasket 42 has been broughtabout. This accomplished, the lower nut 40 is shifted in an upwarddirection, so as to clamp the said horizontal connecting plate 26between both of said nuts 40 and 41 for the purpose of rigidlyinterlocking the said screw rod 38 with said horizontal connecting plate26, in the ultimately established shifted position on a horizontal planewith relation to the said horizontal connecting plate 26. Thereupon,each pair of the cooperating lock nuts 44, on each screw 43, istightened, in order to clamp therebetween plate 25 and thereby preventthe disengagement of the inner ends of said screws 43 from clamp plate37, which otherwise might ensue due to vibration of the superstructureframe 16 due to the use of the said exercising devices 17.

. From thehereinabove description it will be seen that clamp members31-35 and 36-37 are adjustable vertically to or away from the horizontalconnecting plate 26 for thereby shifting the said horizontal legsupporting plate 21 to or away from the horizontal bed frame bar 13, asis indicated by dotted lines in Fig. 2, for vertical adjustment of leg15 for the purposes hereinabove specified. During the verticaladjustment of the screw rod 38 for vertical shifting of the clamp member36-37 so as to bring the latter to its cooperating clamping positionwith relation to the clamp member 31-35, ribs 45 shift simultaneouslywith the clamp plate 37, as is indicated by dotted lines in Fig. 2,without displacing the positional relation of the inner ends of screws43 with the space defined by said ribs 45.

From the hereinabove description it will also be seen that the clampmember 36-37 is also adjustable upon a horizontal plane, through themedium of said screws 43, for the purpose of shifting said latter clampmember to or away from the cooperating clamp member 31-35, for exertingpressure upon gasket 42 in a lateral direction, for thereby mounting theclamp device upon and interconnecting the same with the said horizontalframe bar 13.

, Although in one of the various positional adjustments of thehorizontal plates 21 and 26, in a vertical direction, away from thehorizontal frame bar 13, an upper outward peripheral portion of gasket42 may contact the underface of said horizontal plate 26, as is seen inFig. 2, no such result need occur under all conditions, because, as isobvious, when plates 21 and 26 have been shifted to a sufiicient degreeaway from the clamp members 3 1-35 and 36-37, or to clamp members havebeen shifted away from plate 26 in a downward direction, then gasket 42will become spaced from said plate 26 and out of contact therewith.

It is observed that clamp plates 35 and 37 need not be straight on avertical plane, as is indicated in Fig. 2, but may be transverselyarcuate to conform to the arc of gasket 42 or of the horizontal framebar 13, as the case may be, and thereby to define the continuingrespective arcs of jaws 31 and 36. From this aspect of the inventionclamping members 31-35 and 36-37 are in efiect the clamping jaws.Forming clamp plate 37 in an are indicated would require either thecorresponding forming of ribs 45 or the enlargement of their depth widthwith relation to the transverse plane of said clamp plate 37, butotherwise the function of said ribs 45 would remain unaltered.

put it in different words, when the said The diameter, the girth, thetransverse configuration and the contour the same to the particulardiameter, girth or contour of the horizontal frame bar 13. Although thetransverse split 46 made in gasket 42 will sufiiciently adapt the samefor use with multi-shaped horizontal frame bars 13, a set ofmulti-shaped gaskets may be provided from which a most suitableselection may be made for use with a horizontal frame bar 13 of anyparticular cross-sectional shape. Some of the horizontal frame bars 13may be either square or rectangular on transverse cross-section, inconnection with which the gasket may be made in an approximatelycorresponding shape on transverse crosssection. Then again head and footend parts in some beds are made of a solid metallic sheet, with theupper horizontal edge portions of which strengthening ribs,corresponding to the horizontal frame bar 13, integrally connect. Withsuch ribs gasket 42, such as herein disclosed, would work equally well,with the adjacent marginal portion of the sheet material, depending fromthe rib in a downward direction, passed through and accommodated withinsplit 46.

Obviously, the employment sential element of the invention. The primarypurpose of gasket 42 is to bring about a more positive engagement of theclamping jaws with the horizontal frame bar 13 as well as to preventscratching and marring of the said horizontal frame bar 13, whichotherwise might ensue if in a direct contact with the metallic parts ofthe present clamp device. However, if the clamping jaws were to directlycontact with the said horizontal frame bar 13 the result would bereasonably satisfactory.

-It is further observed that'said plates 21 and 26, along with thevertical side plates 19 and 20, due to the interthrough the clamp, withthe space defined by said plates 21 and 26 affording access formanipulation of nuts 34 and 41 as well as accommodation for the verticalshifting movement of screw rod 38.

Plate 25 may be cut off from the adjacent end of the horizontalconnecting plate 26, with the said adjacent end directly welded to theinner face of the vertical side plate 20, with the lower end extended ina downward direction, with the said extended end substituting the saidplate 25. From this aspect of the invention plate 25 may be consideredas an integral part of the said vertical side plate 20 for supportingthe said screws 43.

The reduction of the lower ends of the vertical side plate 19 dependingends of the vertical side plate 19 and plate 24, below the horizontalconnecting plate 26 may be entirely eliminated, with the adjacent endsof said vertical side plate 19 and the said horizontal connecting plate26 joined through a weld such as 27.

While the employment of screws able for supporting said latter clampmember in a of gasket 42 may be varied to conform of said vertical sideplate 20 43 for bearing uponclamp member 36-37 from a lateral directionis preferassesses operative positional relation on a horizontal planewith respect to the other clamp member 31-35, a reasonably: operativeclamp device-Will result if said screws 43 were entirely elimi'nateda Inthis latter instancethe vertical as well as the horizontal operativepositional relation of said clamp member 36-37 with respect to the clampmember 31-35, will be had solely through screw rod 38, slot 39, and nuts40' and- 41, the latter clamping therebetween said lower horizontalplate 26 forsupporting the clamp member 36-37 in both of its adjustedrelations. However, prior to the shifting of nuts 46 and 41 in a clampedrelation with the said lower horizontal plate 2e, initial manualpressure against the clamp member 36-37 in the direction of the clampmember 31-35 should be resorted to in order to bring the said clampmember 36-37 in a firm contactual position with gasket 42 or thehorizontal frame bar 13, as the case may be. The said positionalrelation of the clamp member 36-37 brought about by the manual pressureexerted thereagainst will continue to be maintained to a reasonablysatisfactory degree when nuts 40' and 41 have been brought in a clampedrelation with said lower horizontal plate 26.

Thus, screws 43 do not constitute an essential element of the inventionunder all conditions. The employmnt or elimination of screws 43 willdepend upon such factors as the degree of vibration brought about by theuse of the said exercising devices 17, the weight. of the superstructureover the bed, including legs 15, frame 16, and exercising devices 17,and the force employed by the patient for pulling or otherwise usingsaid exercising devices 17.

While there are described herein preferred embodiments of the presentinvention, it is nevertheless to be understood that minor changes may bemade therein with out departing from the spirit and scope of theinvention as claimed.

What I claim as new is:

1. A clamp of the class described comprising a supporting fixtureincluding a pair of horizontal spaced plates and a pair of verticalspaced plates, a pair of clamping members each depending in a downwarddirection from said supporting fixture, means for shifting said clampingmembers in an upright direction to. or away from said supporting fixturefor adjusting the distance of said supporting fixture from said clampingmembers, means for rigidly interconnecting said clamping members withsaid supporting fixture in their adjusted relation, and means forshifting one of said clamping members towards the other on a horizontalplane for bringing said clamping members to their mutual clampingrelation.

2. A clamp of the class described comprising an oblong supportingfixture, a pair of clamping members each depending in a downwarddirection from an end of said supporting fixture, means carried by saidsupporting fixture whereby said clamping members may be shifted in anupright direction to or away from said supporting fixture for adjustingthe distance of the latter from said clamping members, means for rigidlyinterconnecting said clamping members with said supporting fixture intheir adjusted relation, means supported by said supporting fixturepermitting, shifting of one of said clamping members toward the other ona horizontal plane for adjusting the mutual clamping relation of saidclamping members, and means supported by saidsupporting fixture formaintaining said clamping members in their adjusted clamping relation.

,3. A clamp of the. class described comprising a substantiallyrectangular supporting fixture including a lower horizontal plate, anupper horizontal plate and a pairof vertical plates, said verticalplates rigidly interconnecting the ends of the twohorizontal' plates, ashiftable member in a contactual relation, with the outer, face of oneof said vertical plates, a clamping member depending from the lower endof said" shiftable member, said' shiftable with said lower horizontalplate,

' supporting said clamping member in its adjusted relationwith saidlower horizontal plate, a second clamping member, means carried by saidlower horizontal plate for adjusting the distance on a vertical plane ofsaid second.

clamping member to or away from said lower horizontal f plate, and meansdownwardly depending from the other of said vertical plates for shiftingsaid second clamping member to or away from said first named clampingmember for adjusting both of said clamping members on a horizontal planein their mutual clamping relation.

4. A clamp of the class described comprising a substantially rectangularsupporting fixture including a lower horizontal plate, an upperhorizontal plate and a pair of vertical plates, said vertical platesrigidly interconnecting the ends of thetwo horizontal plates, ashiftable member in a contactual relation with the outer face of one ofsaid vertical plates, a clamping member depending from the lower end ofsaid shiftable member, said shiitable member being adapted to adjust thedistance of said clamping member on a vertical plane to or away fromsaid lower horizontal plate, means for rigidly interconnecting saidshiftable member with said vertical plate for supporting said clampingmember in its adjusted relation with said lower horizontal plate, asecond clamping member, a rod in a rigid association with theupper endof said second clamping member, said lower horizontal plate beingprovided with an oblong slot for accommodating said rod therewithin andfor permitting extension thereof within the space defined by both ofsaid horizontal plates, said rod being adapted for shifting movementswithin said slot both in a transverse and a longitudinal relation withsaid lower horizontal plate for thereby shifting said second clampingmember upon vertical and horizontal planes to a clamping position withrelation to said first named clamping member, means depending from theother of said vertical plates for bearing against said second clampingmember on a horizontal plane for firmly supporting said second clampingmember on a horizontal plane in its clamping position with respect tosaid first named clamping member, and means in association with said rodand said lower horizontal plate for interlocking the former with thelatter for rigidly supporting said rod in its transverse andlongitudinal adjusted relations with respect to said lower horizontalplate.

5. A clamp of the class described comprising a substantially rectangularsupporting fixture including a lower horizontal plate, an upperhorizontalplate and a pair of vertical plates, said vertical platesrigidly interconnecting the ends of the two horizontal plates, ashiftable member in a contactual relation with the outer face of oneofsaid vertical plates, a clamping member depending from the lower end ofsaid shiftable member, said shiftable member being adapted to adjust thedistance of said clamping member on a vertical plane to or away fromsaid lower horizontal plate, means for rigidly interconnecting saidshiftable member with said vertical plate for supporting said clampingmember in its adjusted relation a second clamping memher, a screw rod ina rigid association with the upper end of said second clamping member,said lower horizontal. plate being provided with an oblong slot forfreely accommodating said screw rod therewithin and for permittingextension thereof within the space defined by both of said horizontalplates, said screw rod being adapted' for shifting movements within saidslot 'both in a transverse and a longitudinal relation with said lowerhorizontal plate for thereby shifting said second clampingmember' uponvertica and horizontal planes to a clamping position with relation tosaid first named clamping member, means depending from the otherof'saidvertical;

plates for hearing against said second clamping member on a horizontalplane for firmly supporting said second clamping member on a horizontalplane in its clamping position with respect to said first named clampingmember, and a pair of nuts mounted for shifting movement upon said screwrod, one below and the other above said lower horizontal plate forclamping the latter therebetween for rigidly interconnecting said screwrod with said lower horizontal plate for maintaining said screw rod inits transverse and longitudinal adjusted relations with respect to saidlower horizontal plate.

6. A clamp of the class described comprising an oblong supportingfixture, a clamp member disposed below said supporting fixture adjacentone end of the latter, means carried by said latter end of saidsupporting fixture for shifting said clamp member upon a vertical planeto or away from said supporting fixture in an adjusted relationtherewith, means carried by said supporting fixture for n'gidlyinterlocking said clamp member in its adjusted shifted relation withrespect to said supporting fixture, a second clamp member disposed belowsaid supporting fixture adjacent the opposite end of the latter, meansfor shifting of said second clamp member upon a vertical plane to oraway from said supporting fixture in an adjusted relation therewith andfor shifting the same upon a horizontal plane to or away from said firstnamed clamp member in an adjusted relation with the latter, and meansfor interlocking said second named clamp member with said supportingfixture in both of its adjusted shifted positions.

7. A clamp of the class described comprising an oblong supportingfixture, a clamp member disposed below said supporting fixture adjacentone end of the latter, means carried by said latter end of saidsupporting fixture for shifting said clamp member upon a vertical planeto or away from said supporting fixture in an adjusted relationtherewith, means carried by said supporting fixture for rigidlyinterlocking said clamp member in its adjusted shifted relation withrespect to said supporting fixture, a second clamp member disposed belowsaid supporting fixture adjacent the opposite end of the latter, a rodin a rigid association with the upper end of said second clamp member,said supporting fixture adjacent the said opposite end of the latterbeing provided with a longitudinal slot for accommodating said rodtherewithin, said rod being capable of vertical and horizontal shiftingmovements within said slot for adjusting both the vertical shiftedposition of said second clamp member with relation to said supportingfixture and the horizontal shifted position thereof with relation tosaid first named clamp member, and means in association with said rodfor interlocking the same with said supporting fixture for rigidlysupporting said second clamp member in both of its adjusted shiftedpositions with said supporting fixture.

8. A clamp for attachment to a horizontal frame bar at the foot or headof a bed for supporting thereon a leg in therapeutic devices disposedover the bed, comprising a lower and upper horizontal plates, said upperhorizontal plate being adapted to carry a socket wherein the lower endof the said leg may be received, a pair of vertical end walls rigidlyconnecting the ends of said lower and upper horizontal plates, a clampmember, means carried by one of said vertical end walls for permittingvertical I adjustment of said clamp member with respect to said lowerhorizontal plate, a second clamp member supported by said lowerhorizontal plate adjacent the opposite of said vertical end walls, saidclamp members being adapted to accommodate therebetween the saidhorizontal frame bar, means carried by said second clamp member andassociated with said lower horizontal plate for vertically adjustingsaid second clamp member with respect to said lower horizontal plate,means for shifting said second clamp member towards said horizontalframe member on a horizontal plane to a cooperative clamping relationwith said first named clamp member, means associated with said secondclamp member and coacting said lower horizontal plate for maintainingsaid second clamp memher in its vertical adjusted position, and meanscarried by the opposite of said vertical end walls for maintaining saidsecond clamp member in its horizontal adjusted position.

No references cited.

